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    • 14. 发明申请
    • APPARATUS AND METHOD FOR IMAGE PROCESSING IN SPATIAL LIGHT MODULATED DISPLAY SYSTEMS
    • 空间光调制显示系统中图像处理的装置和方法
    • WO2006135359A1
    • 2006-12-21
    • PCT/US2005/020231
    • 2005-06-08
    • THOMSON LICENSING S.A.RUMREICH, Mark, FrancisSTUBBS, Joel, Emerson
    • RUMREICH, Mark, FrancisSTUBBS, Joel, Emerson
    • G09G3/34G09G3/00H04N5/57H04N5/74
    • G09G3/007G09G3/346G09G2320/0285G09G2360/16H04N5/20H04N5/57H04N5/7458H04N9/312H04N9/646
    • Embodiments of the invention provide a circuit for peaking video signals to be provided to a dynamic range limiter for displaying images on a display device. The circuit comprises a peaking filter including a filter input configured to receive a video signal. A first filter output provides a peaking signal for the video signal. A second filter output provides a peaked video signal based upon the peaking signal. The circuit further comprises a throttle circuit including a throttle input coupled to the second filter output. A throttle output provides a throttle signal based upon the peaked video signal. A scaler is coupled between the first filter output and the dynamic range limiter. The scaler is further coupled to the throttle output. The scaler adjusts the peaking signal based upon the throttle signal. Accordingly, peaking is adaptively applied to the video signal based upon the dynamic range limits of the dynamic range limiter, as well as variations in brightness of the input signal over portions of the displayed image.
    • 本发明的实施例提供了一种用于对要提供给动态范围限制器的视频信号进行峰化的电路,用于在显示装置上显示图像。 该电路包括一个峰值滤波器,它包括被配置为接收视频信号的滤波器输入。 第一滤波器输出为视频信号提供峰值信号。 第二滤波器输出基于峰值信号提供峰值视频信号。 该电路还包括节流阀电路,其包括耦合到第二滤波器输出的节气门输入。 节气门输出基于峰值视频信号提供油门信号。 缩放器耦合在第一滤波器输出和动态范围限制器之间。 缩放器进一步联接到节流阀输出。 缩放器根据油门信号调节峰值信号。 因此,基于动态范围限制器的动态范围限制以及输入信号在显示图像的部分上的亮度变化,自适应地对视频信号施加峰值。